Aim:

Apparatus: LabQuest Metre Stick

LabQuest Masking Tape

Motion Detector

Diagarm:

Procedure: a) An open area at least 4 m long in front of the Motion Detector was found. Short
strips of masking tape was used on the floor to mark distances of 1 m, 2 m, and 3 m from the
Motion Detector.

b) The hinge on the Motion Detector was opened. When the data is collected, the
Motion Detector was held so the round, metal detector is always pointed directly at the pseudo
wall.

c) The position readings were monitored. Back and forth movements were made to
confirm that the values made sense.

d) A graph of motion was made when walking away from the Motion detector with
constant velocity.

e) A distance vs. time graph was sketched to predict how the graph would look if the
walking pace increased.

f) The Motion Detector was used to sketch the predicted distance vs. time graph.

7. Choose Motion Match ► New Position Match from the Analyze menu to set up LabQuest for
graph matching. A target graph will be displayed for you to match.
8. Write down how you would walk to reproduce the target graph. Sketch a copy of the graph.
9. To test your prediction, choose a starting position. Have your partner start data collection, then
walk in such a way that the graph of your motion matches the target graph on the screen.

10. If you were not successful, have your partner start data collection when you are ready to begin
walking. Repeat this process until your motion closely matches the graph on the screen. Sketch the
graph with your best attempt.
11. Perform a second graph match by again choosing Motion Match ► New Position Match from the
Analyze menu. This will generate a new target graph for you to match.
12. Answer the Analysis questions for Part II before proceeding to Part III.

Part IIl Velocity vs. Time Graph Matching

13. LabQuest can also generate random target velocity graphs for you to match. Choose Motion
Match ► New Velocity Match from the Analyze menu to view a velocity target graph.
14. Write down how you would walk to produce this target graph. Sketch a copy of the graph.
15. To test your prediction, choose a starting position and stand at that point. Have your partner start
data collection, then walk in such a way that the graph of your motion matches the target graph on
the screen. It will be more difficult to match the velocity graph than it was for the position graph.
16. If you were not successful, have your partner start data collection when you are ready to start
walking. Repeat this process until your motion closely matches the graph on the screen. Print or
sketch the graph with your best attempt.
17. Perform a second velocity graph match by choosing Motion Match ► New Velocity Match from
the Analyze menu. This will generate a new target velocity graph for you to match.
18. Remove the masking tape strips from the floor.

Table Showing Results From

x Frequency F(x)

1 3 3

2 10 20
Results: 3 13 39

4 18 72

5 16 80

6 18 108

7 16 112

8 3 24

9 1 9

10 2 20
Calculations: _______________________________________________________

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x Frequency F(x)
1 7 7
2 7 14
3 8 24
4 11 44
5 16 80
6 11 66
7 16 112
8 12 96
9 6 54
10 6 60
Results:
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Discussion: In an ideal scenario the concentration of dart holes would be in the eye level
region. Although most of the darts loaded in this area from the experiment a great
deal of darts laded outside this region and this was due to a combination of factors
which include human and technical errors.
 When the darts were thrown at 75(cm) away from the target it was seen that most
of the darts landed in the eye level region, where most of the darts landed in the
x3-x4 region. Most trials had darts landing in the same holes and the board on
which the paper was placed was badly battered and this caused the darts to shift
giving multiply reads for one thrown. This created difficulties when the holes
were to be tallied and caused random errors in measurement which caused a
deviation in the experiment value.

The initial distance was then doubled causing the holes to be scattered over a
wider area between x4-x6. Many of the darts also landed in the same holes which
caused the intricacy when counting the holes. The board was also damaged
causing darts to fall out as they ht the board tearing the paper.

Conclusion:
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